Gen3 motor into a Gen1/2 bike - Page 2 - Triumph675.Net Forums
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post #11 of 35 Old 10-02-20, 17:48 Thread Starter
samwise_i
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^ Thanks for sharing the info. 2+ heads are better than 1:-)
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post #12 of 35 Old 10-02-20, 23:26
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idk if you guys seen this but here....
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post #13 of 35 Old 10-03-20, 01:51
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That’s a great little series. But he’s basically putting Daytona fairings on a 765RS.

I’m sure the easiest way is to have everything from a donor bike, but I won’t have access to all that. Great to see people building these things nonetheless.


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post #14 of 35 Old 10-03-20, 10:16
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Street triple 765 engine,harness and clock but it’s a 2nd gen Frame with a 3rd gen swing arm
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post #15 of 35 Old 10-03-20, 10:51
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Very nice project for sure, but like it was said, he is basically just swapping all the motor and electronics from the new bike into a old frame....That is to easy.

swapping in a 13+ motor, using all the electronics and wiring from the 1/2nd gen is a bit more complicated. supposedly tuneecu can now make your stock ecu a race ecu, which should allow for the timing changes it needs.

Most of you people are not capable of being your GD self, to damn worried about being politically correct.

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post #16 of 35 Old 10-03-20, 11:00
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‘Too easy’ might be a bit harsh, but straightforward indeed. It’s essentially taking a 765RS and swapping over bodywork as far as ‘modifying things to fit’ goes.

His mentioning the wheel speed sensor trouble was something I hadn’t thought of, but using the old race ECU and harness that wouldn’t be a problem for a non-abs bike.

I really see the only potential issue for swapping this into a 1/2 gen bike would be keeping the under tail exhaust and making it work with gen 3 headers and a gen3 675 sump, and working out something with the ignition trigger system. Otherwise the gen1/2 throttles, airbox etc shouldn’t be an issue.

Thinking out loud though, the gen1/2 components may cost some power potential compared
To what the gen3/765Rs start with.


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post #17 of 35 Old 10-03-20, 17:24
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Gen1/2 airbox will only create different mid range characteristics in the torque curve, exhaust same thing.
So don't think you will lose torque but it will come on slightly differently to the 765...

I'm doing the conversion into a Gen2 frame & swingarm with the std ecu/gauges now that a plan for the ignition timing is sorted.

I much prefer the under seat exhaust!!!!
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post #18 of 35 Old 10-03-20, 17:52 Thread Starter
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Quote:
Originally Posted by nlzmo400r View Post
‘Too easy’ might be a bit harsh, but straightforward indeed. It’s essentially taking a 765RS and swapping over bodywork as far as ‘modifying things to fit’ goes.
Everything is relative. Have you seen what this guy is doing:
He is building almost everything and made his own dyno. I like his motto, "Easy is not worth anything"


Quote:
Originally Posted by nlzmo400r View Post
His mentioning the wheel speed sensor trouble was something I hadn’t thought of, but using the old race ECU and harness that wouldn’t be a problem for a non-abs bike.
Yes, and good thing the Gen3 motors have a place to put the speed sensor which runs off the transmission.


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Originally Posted by nlzmo400r View Post
Thinking out loud though, the gen1/2 components may cost some power potential compared To what the gen3/765Rs start with.
Sure, the Gen3 765 has different length intake funnels, but I believe that those could be tuned around. The powerband may be a bit different, but hopefully peak power should be similar.
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post #19 of 35 Old 10-03-20, 18:01
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Just an fyi, the gen 3 header bolts right up to the gen 2 head... and clears the oil pan just fine... I have this on my 2nd gen motor, with a custom adapter pipe to keep my underseat akra exhaust.

Most of you people are not capable of being your GD self, to damn worried about being politically correct.

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post #20 of 35 Old 10-03-20, 18:54
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So it’s safe to assume a gen 2 header should fit in a gen2 chassis with gen3 oval port engine.


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